Do you remember Google Insight? Yes, it was a product launched by Google, which offered more flexibility and functionality in terms of understanding the user's behaviour with the capability of displaying search volume according to the regional interest. In addition, to these features users can NOW use this tool to analyze user's search behaviour on Google News, Google Image and Google Product searches. You can also use this tool to refine top searches based on time specific ranges, geographic location, or subject categories.
For example, U.S. browsers can now find top searches based on U.S. Metro areas through Google Insight.
The new additions would help webmasters in geo-targeting their ad campaigns. They can use this tool to discover top user searches under Google Products and use the results in their ad campaigns.